Direct Red 173
Name:C.I.Direct Red 173,C.I.29290
Molecular Structure: Double azo class
C.I.Direct Red 173,C.I.29290,CAS 59537-47-2,1042.88,C41H32N12Na2O15S2
Molecular Formula:C41H32N12Na2O15S2
Molecular Weight: 1042.88
CAS Registry Number:59537-47-2
Manufacturing Methods : 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazo, and 1-(4-Aminophenyl)-3-methyl-1H-pyrazol-5(4H)-one coupling, and then make the light gasification.
Properties and Applications: dark red. Soluble in water for red light brown, and adequate soluble in alcohol. For the strong sulfuric acid in orange, yellow for red after diluted. The dye solution to join strong sodium hydroxide solution for orange brown; Join strong hydrochloric acid is palm light orange, precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 5 | 6 | 4 | 4-5 | ||
| AATCC | 5 | 4 | 6-7 | 4-5 | 5 | ||
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